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Specifications
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CO-255 SERIES
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CO-256 SERIES
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FREQUENCY
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140.1 - 420 MHz
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420.1 - 630 MHz
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STABILITY
Temperature
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(Temp Range A) +15°C to +35°C |
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CO-255A57: ±5 x 10-7
CO-255A17: ±1 x 10-7
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CO-256A57: ±5 x 10-7
CO-256A17: ±1 x 10-7
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(Temp Range B) 0°C to +50°C
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CO-255B16: ±1 x 10-6
CO-255B57: ±5 x 10-7
CO-255B27: ±2 x 10-7
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CO-256B16: ±1 x 10-6
CO-256B57: ±5 x 10-7
CO-256B27: ±2 x 10-7
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(Temp Range C) 0°C to +70°C
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CO-255C36: ±3 x 10-6
CO-255C16: ±1 x 10-6
CO-255C37: ±3 x 10-7
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CO-256C36: ±3 x 10-6
CO-256C16: ±1 x 10-6
CO-256C37: ±3 x 10-7
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(Temp Range D) -20°C to +70°C
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CO-255D56: ±5 x 10-6
CO-255D16: ±1 x 10-6
CO-255D57: ±5 x 10-7
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CO-256D56: ±5 x 10-6
CO-256D16: ±1 x 10-6
CO-256D57: ±5 x 10-7
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(Temp Range E) -40°C to +75°C
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CO-255E56: ±5 x 10-6
CO-255E26: ±2 x 10-6
CO-255E16: ±1 x 10-6
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CO-256E56: ±5 x 10-6
CO-256E26: ±2 x 10-6
CO-256E16: ±1 x 10-6
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(Temp Range F) -55°C to +85°C
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CO-255F56: ±5 x 10-6
CO-255F26: ±2 x 10-6
CO-255F16: ±1 x 10-6
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CO-256F56: ±5 x 10-6
CO-256F26: ±2 x 10-6
CO-256F16: ±1 x 10-6
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(Temp Range G) -55°C to +105°C
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CO-255G56: ±5 x 10-6
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CO-256G56: ±5 x 10-6
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(Temp Range H) -55°C to +125°C
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CO-255H15: ±1 x 10-5
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CO-256H15: ±1 x 10-5
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Aging Rate
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1 x 10-6/year
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Short Term (Allan Variance)
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1 x 10-9/second under constant conditions
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Frequency vs Supply
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2 x 10-8 per percent in supply
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OUTPUT / SUPPLY
(±5%)
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Output Level
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Standard:
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>0.5 Vrms/50 (+7 dBm)
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Option "R":
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>1.0 Vrms/50 (+13 dBm)
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*Option "M":
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100K ECL
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**Supply ±5%
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Standard:
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+15 Vdc
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Option "R":
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+15 Vdc
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*Option "M":
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+15 Vdc and -5.2 Vdc
(-4.5 Vdc optional)
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*
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Only available in CO - 255
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**
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Any supply in 12 - 24 Vdc range optional
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Current
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Sine:
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<50mA
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ECL:
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<30mA for oscillator;
also <60mA at -5.2V
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<60 mA
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Harmonics and
Sub-Harmonics (sine output)
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Harmonics and sub-harmonics are -20 dBc.
Improved harmonic and subharmonic attenuation optional.
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FREQUENCY
Mechanical
ADJUSTMENT
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Range sufficient to compensate for 5 to 10 years
of crystal aging; settable to <1 x 10 - 7
Option "V": VCXO control permits remote frequency
adjustment of phase locking.
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